JPS6228471Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a cap for a writing instrument.

Usually, a writing instrument cap has a clip attached to it, and many also have a cylindrical lid insert fixed inside to seal the pen body and prevent ink from evaporating. Therefore, this type of cap tends to have a large number of parts and a complicated structure, but the clip has a particularly simple structure and is easy to assemble, and once assembled, it can withstand force in either direction. It is required that it be installed securely and without wobbling even if it is affected by However, it is quite difficult to satisfy both of these requirements at the same time; products with a simple structure and easy to assemble are likely to cause looseness, and conversely, products with a complex structure and a large number of parts are needed to securely install them. Therefore, there was a problem that the assembly work was complicated.

Therefore, the present invention has been devised to provide a cap for writing instruments that has a simple structure, a small number of parts, is easy to assemble, and has a clip and a cylindrical lid insert that does not cause wobbling once assembled. The purpose is to provide. The structure of the clip is such that the strip is bent into an L-shape to form an insertion part, the insertion part has an engagement hole, and the internal dimension in the vertical direction is the same as the thickness of the clip. a pipe-shaped lid having a window hole with ample margin; a lid insert having a fixing hole smaller than the engagement hole on the top surface and having an outer diameter equal to the inner diameter of the lid; It consists of a lid plug with a rather large engagement protrusion protruding from the bottom surface, and the insertion part of the clip inserted through the window hole of the lid comes into contact with the top surface of the lid insert fitted in the lid. , the engaging protrusion of the lid plug is passed through the engaging hole of the clip and press-fitted into the fixing hole of the lid insert, so that the insertion part of the clip contacts the upper edge of the window hole, and the step of the lid plug is pressed into place. This feature is characterized in that the portion abuts against the upper edge of the lid.

The present invention will be specifically described below based on embodiments shown in the drawings.

The clip 1 is a belt-shaped metal plate having a thickness d and a width w, which is bent into an L shape, and the bent portion is an insertion portion 11 that is fixed inside the cap, An engagement hole 12, which is an elongated hole, is bored in the center, and the lower end is also folded back to form a pressure contact part 13. The lid 2, which is the main body of the cap, is made of metal pipe, and has an insertion part 1 at a predetermined position near the top end.
A window hole 21 into which the clip 1 is inserted is bored, and the width of this window hole 21 is approximately equal to the width w of the clip 1, while the internal dimension in the vertical direction is sufficient compared to the plate thickness d. The size is large enough to provide plenty of room. Next, the lid insert 3 made of elastic synthetic resin has a cylindrical shape with a bottom, and is inserted into the lid 2 with the bottom facing upward to seal the pen body of the writing instrument. A groove 32 whose width is equal to the width w of the insertion part 11 is formed on the top surface 31, and a bag-shaped fixing hole 3 is formed in the center of the groove 32.
3 is provided. The shape of the fixing hole 33 is smaller than the engagement hole 12, and when the insert portion 11 is fitted into the groove 32 and assembled, the fixing hole 33 is smaller than the engagement hole 12.
It's starting to match. The outer diameter of the lid insert 3 has only a slight clearance with respect to the inner diameter of the lid 2, and it can be easily inserted into the lid 2, but it does not wobble in the direction perpendicular to the axis. It's becoming like that. Next, the lid stopper 4 has a small diameter part 42 connected to it via a stepped part 41, and this small diameter part 42 is a part that is inserted into the lid 2, and its outer diameter is smaller than the inside diameter of the lid 2. . And the small diameter portion 42
An engaging protrusion 43 protrudes from the lower surface of the holder, and its cross-sectional shape is slightly larger than the fixing hole 33, and is press-fitted into the fixing hole 33 and fixed.

The writing instrument cap of the present invention has the above four components, but in order to assemble it,
The insertion part 11 is inserted through the window hole 21, the lid insert 3 is fitted from below the lid 2, and the insertion part 11 is fitted into the groove 32. Then, the lid stopper 4 is fitted from above the lid 2, and the engagement protrusion 43 is inserted into the engagement hole 12.
It is press-fitted into the fixing hole 33 through. Then, the stepped portion 41 of the lid stopper 4 comes into contact with the upper edge 22 of the lid 2, but
At this time, there is a margin between the lower end of the engagement protrusion 43 and the bottom surface of the fixing hole 33, and when the engagement protrusion 43 is press-fitted as deeply as possible, the lower surface of the insertion part 11 The top surface 31 contacts the upper edge 21a of the window hole 21, and the pressure contact portion 13 contacts the outer periphery of the lid 2. Therefore, the clip 1 is attached to the upper edge 21
Since it is supported at three points: a, the top surface 31, and the outer periphery of the lid 2, there is no wobbling even if a rotational force about the window hole 21 is applied to the clip 1, and the engagement hole 12
Since the engaging protrusion 43 is inserted into the clip 1, it will not come off even if a pulling force is applied to the clip 1. The groove 32 of the lid insert 3 fits into the clip insertion part 11 and does not rotate, and the lid stopper 4 has an engaging protrusion 43 and either the engaging hole 12 or the fixing hole 33 in a different shape than a circular shape. If this is done, the lid stopper 4 and the lid insert 3 will not rotate together.

In this way, the present invention has only four components and does not require other parts such as nuts, and the clip and lid can be made of band material and pipe material, respectively, so the shape is simple and the raw material yield is low. It's also big. Since the clip has an engagement protrusion inserted into the engagement hole and is supported at three points, it will not fall off or wobble. Since the insertion portion of the clip comes into contact with the upper edge of the window hole, there is no problem in appearance even if the vertical and internal dimensions of the window hole are increased, and the clip can be easily inserted into the window hole. Then,
According to the present invention, the writing instrument has a simple structure, has a small number of parts, is easy to assemble, and has a clip and a cylindrical lid insert that will not rattle or rotate once assembled. can provide a cap for use.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the embodiment of the present invention, Figures 2 to 5
Each figure is a perspective view of the component parts. DESCRIPTION OF SYMBOLS 1... Clip, 11... Insertion part, 12... Engagement hole, 13... Pressure contact part, 2... Lid, 21... Window hole, 3... Lid insert, 31... Top surface, 33 ... Fixing hole, 4 ... Lid stopper, 41 ... Step portion, 43 ... Engagement protrusion.

Claims (1)

[Scope of utility model registration request] The strip material is bent into an L shape to form an insertion part,
A clip with an engagement hole bored in the insertion part, a pipe-shaped lid with a window hole whose vertical inner dimension has an allowance for the thickness of the clip, and It consists of a lid insert with a small fixing hole and an outer diameter equal to the inner diameter of the lid, and a lid stopper with an engaging protrusion projecting from the lower surface that has a slightly larger cross-sectional shape than the fixing hole, and fits into the lid. The insertion part of the clip inserted through the window hole of the lid is brought into contact with the top surface of the installed lid insert, and the engaging protrusion of the lid stopper is passed through the engaging hole of the clip and inserted into the fixing hole of the lid insert. A cap for a writing instrument, characterized in that the clip is press-fitted so that the insertion portion of the clip abuts the upper edge of the window hole, and the stepped portion of the lid plug abuts the upper edge of the lid.